Title

Transport Of Heavy-Metals Through Accumulated Sediments In Wet Ponds

Authors

Authors

Y. A. Yousef; L. Lin; W. Lindeman;T. Hvitvedjacobsen

Comments

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Abbreviated Journal Title

Sci. Total Environ.

Keywords

HIGHWAY RUNOFF; DETENTION PONDS; BOTTOM SEDIMENTS; METAL ACCUMULATION; METAL TRANSPORT; Environmental Sciences

Abstract

Nine detention ponds in Florida were selected to investigate heavy-metal accumulation in their bottom sediments. Core sediment samples were collected from each pond, frozen and divided into six layers. The total metal content and extractable metal by toxicity characteristic leaching procedure (TCLP) were determined for each sediment layer in each pond. The fractions of extractable metals using TCLP exhibited an exponential decline with increasing fine particles (less than 0.062 mm diameter) and organic content. Most of these metals are tightly bound to the bottom sediments, and their transport is very slow. It is feasible to remove the accumulated sediments saturated with metals from the bottom of the ponds for periodic maintenance at relatively long periods, averaging 25 years, to avoid seepage and potential contamination of groundwater beneath the pond.

Journal Title

Science of the Total Environment

Volume

147

Publication Date

1-1-1995

Document Type

Article; Proceedings Paper

Language

English

First Page

485

Last Page

491

WOS Identifier

WOS:A1994NN06400062

ISSN

0048-9697

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